ARERR [8870] To convert custom field to overlay, custom form name and the base form name must be the same.

Product:

AR System server

Description:

Server messages

Type:

Error

Number:

8870

The ARCreateOverlayFromObject API call returns this error occurs when you try to convert custom fields to overlays. Make sure that the name of custom form (that contains the field you want to overlay) matches that of the origin form.
This operation is allowed only for special fields.